Предмет: Алгебра, автор: EkaterinaKau

26. Сократите дробь. Задание на фото)

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Автор ответа: SteelR

0

Решение во вложенном файле

Пояснение: В числителе просто раскраываем как разность кубов. В знаменателе прибавляем и отнимаем x², затем собираем как квадрат суммы, и полученный результат разворачиваем как разность квадратов (x²+1) и x². Один из полученных сомножителей сокращается с многочленом в числителе

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